500 THILOSOPHICAL TRANSACTIONS. [aNNO 174J. 



This red band, or arch, was bounded on the north by streams of a greenish 

 blue, in the same direction. 



After considering this phenomenon for some little time, Mr. M. retired into 

 his garden, where he saw a great brightness almost in the zenith, but declin- 

 ing to the south-west ; which he found to be a centre, from which proceeded 

 many luminous radii, of which the red band was much the most considerable. 

 This crown, or centre, seemed at that time about the place of Cancer ; for it 

 effaced all the neighbouring stars, and he could but just see the 2 stars in the 

 heads of the Twins ; when the brightness was most faded. It would sometimes 

 almost disappear for near a minute, and then kindle again, and dart rays on all 

 sides ; but those to the west and north were short, pale, and soon disappeared. 

 Those wfiich shot southward, were of a fiery red ; and the whole southern part 

 of the atmosphere was tinged with a red brightness, which did not however 

 reach quite down to the horizon. About Q the red band had covered the tail 

 of Ursa Major, having moved considerably towards the north, the centre con- 

 tinuing in the same place ; and by degrees it faded so as not to be distinguishable 

 from the common redness which was spread over so considerable a part of the 

 heavens. About 10, he went to the river-side, where he had a large prospect 

 to the south-east ; and found all that part covered with a dusky red, quite down 

 to the horizon. There were afterwards some faint rays darted, sometimes from 

 the centre of this phenomenon, which had the appearance of a common aurora 

 borealis. 



Concerning the same j4urora Australis. By the Rev. Mr. Timothy Neve. 



N°. 461, p. 843. 



We had from about half an hour after 7, till almost 9 o'clock, an aurora 

 australis, which spread with variety of colours all over the horizon, meeting in 

 a centre almost vertical, but somewhat inclining to the south. The original 

 colours were so mixed and blended in the common centre, as, by the vast va- 

 riety easily distinguished, made a beautiful appearance. The fainter colours 

 came from the two opposite points of the north-west and south-east. The 

 blood-red crimson, &c. were seen chiefly in the north-east and south-west. 



Description of a Catheter, made to remedy the Inconveniencies which occasioned 

 the leaving off the high Operation for the Stone. By Archibald Cleland, Sur- 

 geon. N° 461, p. 844. 



The high operation for the stone was left off very precipitately, in order to intro- 

 duce that method now called the lateral operation, which has been practised for 



